/*      $NetBSD: cpuio.h,v 1.11 2026/03/17 06:46:49 yamt Exp $  */

/*-
 * Copyright (c) 2007, 2009, 2012 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Andrew Doran.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#if !defined(_SYS_CPUIO_H_)
#define _SYS_CPUIO_H_

#include <sys/types.h>
#include <sys/time.h>
#include <sys/ioccom.h>

#ifndef _KERNEL
#include <limits.h>
#include <stdbool.h>
#endif

/*
 * This is not a great place to describe CPU properties, those
 * are better returned via autoconf.
 */
typedef struct cpustate {
        u_int           cs_id;          /* matching cpu_index() */
        uint8_t         cs_online;      /* running unbound LWPs */
        uint8_t         cs_intr;        /* fielding interrupts */
        uint8_t         cs_unused[2];   /* reserved */
        int32_t         cs_lastmod;     /* time of last state change */
        char            cs_name[16];    /* reserved */
        int32_t         cs_lastmodhi;   /* time of last state change */
        uint32_t        cs_intrcnt;     /* count of interrupt handlers + 1 */
        uint32_t        cs_hwid;        /* hardware id */
        uint32_t        cs_reserved;    /* reserved */
} cpustate_t;

#define IOC_CPU_SETSTATE        _IOW('c', 0, cpustate_t)
#define IOC_CPU_GETSTATE        _IOWR('c', 1, cpustate_t)
#define IOC_CPU_GETCOUNT        _IOR('c', 2, int)
#define IOC_CPU_MAPID           _IOWR('c', 3, int)
/* 4 and 5 reserved for compat nb6 x86 amd ucode loader */

struct cpu_ucode_version {
        int loader_version;     /* IN: md version number */
        void *data;             /* OUT: CPU ID data */
};

#define IOC_CPU_UCODE_GET_VERSION       _IOWR('c', 6, struct cpu_ucode_version)

#ifdef __i386__
/* In order to read the info from an amd64 kernel we need ... */
struct cpu_ucode_version_64 {
        int loader_version;     /* IN: md version number */
        int pad1;
        void *data;             /* OUT: CPU ID data */
        int must_be_zero;
};
#define IOC_CPU_UCODE_GET_VERSION_64    _IOWR('c', 6, struct cpu_ucode_version_64)
#endif

struct cpu_ucode {
        int loader_version;     /* md version number */
        int cpu_nr;             /* CPU index or special value below */
#define CPU_UCODE_ALL_CPUS (-1)
#define CPU_UCODE_CURRENT_CPU (-2)
        char fwname[PATH_MAX];
};

#define IOC_CPU_UCODE_APPLY             _IOW('c', 7, struct cpu_ucode)

#endif /* !_SYS_CPUIO_H_ */